Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua tri chat snippets" » "cua tra chat snippets", "cua trinh chat snippets", "cua tri nhan snippets", "chua tri chat snippets", "cua toi chat snippets", "cua tai chat snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cua tri chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua tri chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua tri chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua tri chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.